package com.xkcoding.async.task;

import java.util.concurrent.ThreadFactory;
import java.util.concurrent.atomic.AtomicInteger;

public class MyThreadFactory implements ThreadFactory {

    private static final AtomicInteger poolNumber   = new AtomicInteger(1);
    private final ThreadGroup          group;
    private final AtomicInteger        threadNumber = new AtomicInteger(1);
    private final String               namePrefix;

    public MyThreadFactory(String name) {
        SecurityManager s = System.getSecurityManager();
        group = (s != null) ? s.getThreadGroup() : Thread.currentThread().getThreadGroup();
        namePrefix = name + "-pool-" +
            poolNumber.getAndIncrement() +
            "-thread-";
    }

    /**
     * 覆写了newThread方法
     * @param r
     * @return
     */
    @Override
    public Thread newThread(Runnable r) {
        Thread t = new Thread(group, r,
            namePrefix + threadNumber.getAndIncrement(),
            0);
        if (t.isDaemon()) {
            t.setDaemon(false);
        }
        if (t.getPriority() != Thread.NORM_PRIORITY) {
            t.setPriority(Thread.NORM_PRIORITY);
        }
        return t;
    }
}
